feat: add Task.Supervisor to supervision tree

Add Task.Supervisor for supervised async task execution in cycle generation.

lib/mv/application.ex

@@ -10,6 +10,7 @@ defmodule Mv.Application do
     children = [
       MvWeb.Telemetry,
       Mv.Repo,
+      {Task.Supervisor, name: Mv.TaskSupervisor},
       {DNSCluster, query: Application.get_env(:mv, :dns_cluster_query) || :ignore},
       {Phoenix.PubSub, name: Mv.PubSub},
       {AshAuthentication.Supervisor, otp_app: :my},